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data/Dockerfiles/dovecot/quota_notify.py

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+#!/usr/bin/python3
+
+import smtplib
+import os
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+from email.utils import COMMASPACE, formatdate
+import jinja2
+from jinja2 import Template
+import redis
+import time
+import json
+import sys
+import html2text
+from subprocess import Popen, PIPE, STDOUT
+
+if len(sys.argv) > 2:
+  percent = int(sys.argv[1])
+  username = str(sys.argv[2])
+else:
+  print("Args missing")
+  sys.exit(1)
+
+while True:
+  try:
+    r = redis.StrictRedis(host='redis', decode_responses=True, port=6379, db=0)
+    r.ping()
+  except Exception as ex:
+    print('%s - trying again...'  % (ex))
+    time.sleep(3)
+  else:
+    break
+
+if r.get('QW_HTML'):
+  try:
+    template = Template(r.get('QW_HTML'))
+  except:
+    print("Error: Cannot parse quarantine template, falling back to default template.")
+    with open('/templates/quota.tpl') as file_:
+      template = Template(file_.read())
+else:
+  with open('/templates/quota.tpl') as file_:
+    template = Template(file_.read())
+
+html = template.render(username=username, percent=percent)
+text = html2text.html2text(html)
+
+try:
+  msg = MIMEMultipart('alternative')
+  msg['From'] = r.get('QW_SENDER') or "quota-warning@localhost"
+  msg['Subject'] = r.get('QW_SUBJ') or "Quota warning"
+  msg['Date'] = formatdate(localtime = True)
+  text_part = MIMEText(text, 'plain', 'utf-8')
+  html_part = MIMEText(html, 'html', 'utf-8')
+  msg.attach(text_part)
+  msg.attach(html_part)
+  msg['To'] = username
+  p = Popen(['/usr/libexec/dovecot/dovecot-lda', '-d', username, '-o', '"plugin/quota=maildir:User quota:noenforcing"'], stdout=PIPE, stdin=PIPE, stderr=STDOUT)
+  p.communicate(input=bytes(msg.as_string(), 'utf-8'))
+
+  domain = username.split("@")[-1]
+  if domain and r.hget('QW_BCC', domain):
+    bcc_data = json.loads(r.hget('QW_BCC', domain))
+    bcc_rcpts = bcc_data['bcc_rcpts']
+    if bcc_data['active'] == 1:
+      for rcpt in bcc_rcpts:
+        msg = MIMEMultipart('alternative')
+        msg['From'] = username
+        subject = r.get('QW_SUBJ') or "Quota warning"
+        msg['Subject'] = subject + ' (' + username + ')'
+        msg['Date'] = formatdate(localtime = True)
+        text_part = MIMEText(text, 'plain', 'utf-8')
+        html_part = MIMEText(html, 'html', 'utf-8')
+        msg.attach(text_part)
+        msg.attach(html_part)
+        msg['To'] = rcpt
+        server = smtplib.SMTP('postfix', 588, 'quotanotification')
+        server.ehlo()
+        server.sendmail(msg['From'], str(rcpt), msg.as_string())
+        server.quit()
+
+except Exception as ex:
+  print('Failed to send quota notification: %s' % (ex))
+  sys.exit(1)
+
+try:
+  sys.stdout.close()
+except:
+  pass
+
+try:
+  sys.stderr.close()
+except:
+  pass